interface de entrada de dados javascript

input.js

var readline = require('readline');
var fs = require('fs');

var myInterface = readline.createInterface({
  input: fs.createReadStream('input.in') // file input data
});

myInterface.on('line', function (line) {
  console.log(line); // input data
});

myInterface.on('close', function() {
    console.log('close'); // end input data
});

myInterface.on('error', function(err) {
    console.log(err); // if error
});